package thread;

import java.sql.SQLOutput;

public class SyncDemo4 {
    public static void main(String[] args) {
        Boo boo = new Boo();
        Thread t1 = new Thread(){
            public void run(){
                boo.methodA();
            }
        };
        Thread t2= new Thread(){
            public void run(){
                boo.methodB();
            }
        };
        t1.start();
        t2.start();
    }
}

class Boo{
    public synchronized void methodA(){
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+":正在执行A方法...");
            Thread.sleep(5000);
            System.out.println(t.getName()+":执行A方法完毕");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
//    public synchronized void methodB(){
    public void methodB() {
        System.out.println("已进入B方法");
        synchronized (this) {
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + ":正在执行B计划...");
                Thread.sleep(5000);
                System.out.println(t.getName() + ":执行B计划完毕");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

